Question

how do i solve 3x-2y=9 and y=2x-7?

Answer 1

Answer:

x=5

Step-by-step explanation:

3x-2y=9 putting y=2x-7 in this

3x-2(2x-7)=9

3x-4x+14=9

-x+14=9

-x=-14+9

-x=-5

canceling minus sign

x=5

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Answer 2

Step-by-step explanation:

3x-2y=9 . _(1)

y=2x-7.

2x-y=7 _(2)

multiplying (2) with 2,

4x-2y=14 _(3)

subtracting

4x-2y - 3x+2y = 14-9

x=5

2×5-y=7

10-y=7

y=3